Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a701c12bae4370c…

MALICIOUS

PDF

34.7 KB Created: 2021-06-26 20:28:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 840266f291937a4b9a07c2d209d59435 SHA-1: 12485d358e69679d1912ca91948dac4daff8f93f SHA-256: 1a701c12bae4370c98cb1bf1de4a5d35d2f8ea18e4a5ed03e2b332aae7a4ab40
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure, promising free in-game currency or hacks for popular games like Roblox and Coin Master. It contains multiple embedded URLs that redirect to sites offering these 'generators' or related PDF files, likely serving as a gateway to further malicious content or phishing attempts. The ML classifier strongly indicated maliciousness, and the heuristic firings confirm the use of a game hack redirect lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://netcdn.co/app/431946152/roblox-blox-no-hero-academia-how-to-get-free-spins-game-hack PDF link annotation
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/how-to-get-free-permanent-robux_GM431946152.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/how-can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/how-to-get-free-outfits-on-roblox_GM431946152.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/earn-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/coin-master-hack-spin-generator_GM406889139.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/free-followers-on-tiktok-app_GM835599320.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/how-to-get-free-robux-without-download-apps-or-survey_GM431946152.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/can-you-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/pokemon-go-free-to-play-guide_GM1094591345.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/how-to-hack-into-roblox-that-work_GM431946152.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/how-to-get-free-hacks-for-roblox_GM431946152.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/unpatchable-roblox-hack_GM431946152.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/coin-master-hack-2021-app-download_GM406889139.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/how-to-hack-games-using-check-cashed-not-roblox_GM431946152.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/get-coin-master-free-spin_GM406889139.pdfIn PDF document text
    • https://promidiapropaganda.com.br/modules/default/fotos/uploads/files/play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ec7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EC7 22552 bytes
SHA-256: bcd4a9a3c116cdc07d5d95daead5e3945f6f781a0f011f598e6a29b34496ac0f
font_01_sfnt_off0000612e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x612E 19648 bytes
SHA-256: 3ab88ce56576eb6bdd20eb727c31f53c92797adf9550e51a50f193b33ae0bfa8

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